I've gotten about a 80-90% response rate to the template I show in the post. With a more naive template, it was often more like 10-20%.
Also the advice about including a specific actionable time to make the next step is golden. Telling people exactly what you want converts best in most scenarios.
Personally, I always click spam on that kind of thing unless I've shown somewhere that I'm actively searching.
But this is true.